Photo stratification improves northwest timber volume estimates
By: Colin D. MacLean.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research paper PNW -- 150.; Research paper PNW -- 150.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture
Published: 1972
Place of publication: Portland, Or
Language: eng
Number of pages: 10
Subjects: Forests and forestry -- Remote sensing; Forests and forestry -- Measurement; Aerial photography in forestry
Notes: Cover title.

Bibliography: p. 10.